Answer:
(closed circle on 6)————>
<—————(open circle on -1) 
Step-by-step explanation:
 
        
             
        
        
        
Answer:
23 + 2x
Step-by-step explanation:
17 + 6 + 2x
23 + 2x
 
        
                    
             
        
        
        
Answer: There are 2635 acres covered 24 hours later.
Step-by-step explanation:
Since we have given that 
At time t = 0, number of acres forest fire covers = 2008 acres
We first consider the equation:

At t=0, A= 2008
So, it becomes,

So, now it becomes,

Hence, there are 2635 acres covered 24 hours later.
 
        
             
        
        
        
4(x+3)=4x+12 because when you have the ( ) you have to multiply the front # with the # inside it.
I hope that my image explains it I’m not really good at explaining things